English verb conjugation CAN PREASCERTAIN

Regular verb: preascertain - preascertained - preascertained

Affirmation

Simple form

I can preascertain
you can preascertain
she can preascertain
we can preascertain
you can preascertain
they can preascertain

V-ing form

I can be preascertaining
you can be preascertaining
she can be preascertaining
we can be preascertaining
you can be preascertaining
they can be preascertaining

Perfect

I can have preascertained
you can have preascertained
she can have preascertained
we can have preascertained
you can have preascertained
they can have preascertained

V-ing perfect

I can have been preascertaining
you can have been preascertaining
she can have been preascertaining
we can have been preascertaining
you can have been preascertaining
they can have been preascertaining

Negation

Simple form

I cannot preascertain
you cannot preascertain
she cannot preascertain
we cannot preascertain
you cannot preascertain
they cannot preascertain

V-ing form

I cannot be preascertaining
you cannot be preascertaining
she cannot be preascertaining
we cannot be preascertaining
you cannot be preascertaining
they cannot be preascertaining

Perfect

I cannot have preascertained
you cannot have preascertained
she cannot have preascertained
we cannot have preascertained
you cannot have preascertained
they cannot have preascertained

V-ing perfect

I cannot have been preascertaining
you cannot have been preascertaining
she cannot have been preascertaining
we cannot have been preascertaining
you cannot have been preascertaining
they cannot have been preascertaining

Interrogative form

Simple form

can I preascertain?
can you preascertain?
can she preascertain?
can we preascertain?
can you preascertain?
can they preascertain?

V-ing form

can I be preascertaining?
can you be preascertaining?
can she be preascertaining?
can we be preascertaining?
can you be preascertaining?
can they be preascertaining?

Perfect

can I have preascertained?
can you have preascertained?
can she have preascertained?
can we have preascertained?
can you have preascertained?
can they have preascertained?

V-ing perfect

can I have been preascertaining?
can you have been preascertaining?
can she have been preascertaining?
can we have been preascertaining?
can you have been preascertaining?
can they have been preascertaining?

Interro-negative form

Simple form

can I not preascertain?
can you not preascertain?
can she not preascertain?
can we not preascertain?
can you not preascertain?
can they not preascertain?

V-ing form

can I not be preascertaining?
can you not be preascertaining?
can she not be preascertaining?
can we not be preascertaining?
can you not be preascertaining?
can they not be preascertaining?

Perfect

can I not have preascertained?
can you not have preascertained?
can she not have preascertained?
can we not have preascertained?
can you not have preascertained?
can they not have preascertained?

V-ing perfect

can I not have been preascertaining?
can you not have been preascertaining?
can she not have been preascertaining?
can we not have been preascertaining?
can you not have been preascertaining?
can they not have been preascertaining?

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